Shield for pneumatic tires.



P. W. KRUGER. SHIELD FOR PNEUMATIC TIRES. APPLICATION FILED APB.18,1907.

Patented July 27, 1909.

W m M FRED w. KRUGER, or Lrr'rLEoEDAR, owa

smLnFon PNEUMATIO TIRES.

Specification of Letters Patent.

Application med April 18 1907. Serial No; 868,824.

To allwhom tt may concern: Be it known that I, FRED W. KRUGER, a

citizen of the United States, residin aeriatle Cedar, in the county ofMitc ell and.- State of Iowa, have invented a certain new and usefulShield for Pneumatic Tires, of which the following is a specification.

The object 'of. my inventlon is to provide a-shield especiallyadaptedfor use in connection with pneumatlc' tires for automobiles, and heavyvehicles, and designed to prevent lateral slipping of the steeringwheels over slippery surfaces, and to give driving,, power to thetraction wheels under similar conditions. e

A further Object is to provide a shield of thiskiud that may bequickly-and easily attached to, or detached from a pneumatic tire, andwhen inposition will prevent slipping'as before stated, and alsowillnotinterfere with the flexibility of a pneumatic tire so that the impact ofthe tirepassing over.uneven roa'd surfaces will not be imparted to thevehicle, and further to providea device of this kind in whichthe. platebearing the'ribs will not wear out the pneumatic tire. I

My invention consists in thc'construction, arrangement and combinationof the various parts-of the outer armor, whereby the objectscontemplated are attained, as hereinafter more fully set forth, pointedout in my claim, and illustrated in the accompanyingdrawings, in'whichFigure 1 shows a side elevation of a part of the vehicle wheel with thepneumatic propelling traction whee s.

tire thereon, anda portion. of-an armor embodying my invention, showingthe form thereof adapted for use on the steering wheels. Fig. 2 shows asimilar View showing theform. of armor ada ted for use on the Fig. 3shows; a sectional View on the line 3-3 of Fig.1, and-.Fig. 4 shows asectidnal/view of the line 4-4 of Fig, 2. j

Referring to the. accompanying drawings,

- I have used the reference numeral 10 to 111-.

' a pneumatic tire, and also seg'menta dicate the-portion of the wheelfelly' shown,

.11 indicates the pneumatic tire of ordinary construction, fitted to thefelly. These parts are of the ordinary construction, and form no part ofmy invention.

-' My improved armor comprises aseries of metallic plates 12, eachofsegmental" form to fit the icontourof the periphery "of...

in cross.

section to fit the transverse contour of a pneumatic tire. These plateshave their adjacent edges slightly rounded at the corners, at the pointsmarked 13, for purposes hereinafter made clear. The plates-12 that aredesigned. for use on steering wheels, are each providedwith alongitudinally arranged rib 14, and the plates designed for use onpropelling or traction wheels are provided with ribs 15, that extenddiagonally across the plates. j

For forming each tire armor, I assemble a suflicient number of theplates 12, upon a flexible, non elastic protecting strip '16. which mayif desired, be made of belting or similar material, and which is shapedto tend around the periphery of the tire, and to fit the-transversecurvature thereof, as

-clearly shown in Figs. 3 and 4. The edges of this protecting stripproject a slight distance beyond the edges of the lates 12, and eachplateis'connected with tie protecting strip 16 by means of the rivets17, at the corners of the plates. Two of the plates 12 are provided withoutwardly projecting "ratented luly 27, 1909..

flanges 18, extended transversely, and these flanges are 'adjnstably anddetachahly conuectedby the bolts 1S).

In practical use, the armor may be attached to the pneumatic tire byplacing it around the periphery thereof, and then inserting andtightening, the bolts 19, or if the armor cannotbe firmly secured inthis way, the pneumatic tire may be slightly deflated before the armoris applied, and then after the armor is. fitted in position, thetire maybe inflated, and thus the. armor will be firmly held thereto. Themetallic protecting plates 12 are connected with a flexible andnonelasti'c'strip 16 in "such a way that when said.

plates come in contact'with uneven road surfaces the ',may yield,andthus cushion the wheel. 11 order however, to permit such yieldingmovement of the plates, it is necessary thatthe adjacent edges be curvedat the corners, as clearly shown, so that the plates may have aislightrocking movement relative to each other, :By. this means, the elasticityof the pneumatictire is preserved tolas great an extentas is possible.The object of havingth'eflexible shield 16 project beyondthe ed es ofthe plates 12, is that when thereis sec impact upon the plates 12 astodepress- 'tl1em', and also the pneumatic tire, the sides .of thepneumatic tire will not be brought in 5 direct -co ntact with the sideedges of the to prevent the entrance of dust and-mud 10 between theplates 12, when they are allowed by having a flexible non-elastic shield16 placed in direct contact with the pneumatic each other.

I claim and desire to secure by. Letters Pat-- plates 12, but will [beprotected. from such contact by the edges of the shields 16, whichproject-beyond the plates Furthermore,

tire, I have avoided as much as possible the entrance of dust or mudbetween the pneumatic tire and the shield. It is impossible thenecessary movement with relation to However, by providing the shield 16the surface between the shield and thepneumatic tire may be kept clean.

around the periphery of a tire and to fit the transverse contourthe1'e0f,'a series of me- 1 tallic plates disconnected from each otheredges of said shield being extended beyond the side edges of the platesand the end edges of the plates being curved or rounded as set forth,said plates being also providedwith.

ribs projectlng outwardly therefrom, and means for connecting the twoend plates of the shield with each other.

Des Moines, Iowa, 3/29/07.

' 4 FRED W. KRUGER,

Witnesses:

1 CHARLES E. S'Ausmmr,

C, LARSON.

